Finding the Fourth Proportional to 30,770.55, 42,463.89 and 18,031.23

Step by Step Solution

1. Step 1: Write the proportion equation
   30,770.55 : 42,463.89 = 18,031.23 : x
2. Step 2: Convert to fraction form
   30,770.55/42,463.89 = 18,031.23/x
3. Step 3: Cross multiply
   30,770.55x = 42,463.89 × 18,031.23
4. Step 4: Simplify right side
   30,770.55x = 765,676,167.28
5. Step 5: Solve for x
   x = 765,676,167.28/30,770.55
6. Step 6: Final answer
   x = 24,883.41